Use [TEX] ... [/TEX] tags instead of [tex] ... [/tex] tags.
Edit: Looks like you already did.
It's part of a quantum course, but the problem I'm having is pretty straight math.
There are two similar functions I need to square. I can do it fine, but the question calls for 'simplified form' and I'm struggling to simplify.
They are and . Take the subtraction example (the only difference with the other one is a sign): I get .
Is there a way to express this more simply?
AAaahh. Just to wrap up the question in case anyone else has a similar one.
My mistake was that in quantum mechanics 'squaring' is actually (sometimes) shorthand for multiplying something by its complex conjugate, rather than simply by itself. I needed to multiply by ... and *that* does get simpler, particularly with some judicious application of Euler's identity.